3.point.2

before i start ill let you know i did a search and did not find exactly what im looking for. Im putting an h23a1 with an obd2 into a 95 cx hatch and i need a conversion harness for the ecu. i was told it may be easier to convert the h23a1 to obd2. after some searching i found skunk2 offers a harness for the 96-99 preludes (the h23a1 came out of a 96) that when combined with an obd1 ecu will convert the h23a1 to obd1. will this be all ill need to put the motor into the hatch? or will i then need another harness to connect to the skunk2 harness? sorry if im not being clear but this whole ECU stuff for my swap is really confusing me and no matter how much i research i dont feel like im getting anywhere. thanks.

B18C5-EH2

I'd try to plug the H23A OBD2 engine harness into your Civic's underhod strut tower chassis harness plugs first. The OBD2 Integra engine harnesses plug directly into the 92-95 Civic's chassis harness, so the Prelude ones might too.

If not then I'm pretty sure you should be able to use your stock Civic's engine harness and add the EGR wiring, secondary butterfly wiring, etc.etc.

As far as the convesion harness goes, you won't need one anyways. Your ECU plugs in your car are already OBD1, so all you need to do is find an OBD1 H23A ECU and plug it in. This way you won't have to wire up OBD2 bullshit such as crank fluctuation sensor, secondary o2 sensor, etc.

Check out the stickied H22A swap topic in hybrid - it'll tell you all sorts of good **** that will aplly to the H23A swap.

Turbogixxer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">I'd try to plug the H23A OBD2 engine harness into your Civic's underhod strut tower chassis harness plugs first. </TD></TR></TABLE>

It wil not work, I have tried (even modding it). It is a total different harness.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">The OBD2 Integra engine harnesses plug directly into the 92-95 Civic's chassis harness, so the Prelude ones might too.</TD></TR></TABLE>

He will still have to convert it to H22a style Alt. and all the other extends for a h-series motor. Reuse your stock civic harness, it is easier (it does not look it but it is)


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">If not then I'm pretty sure you should be able to use your stock Civic's engine harness and add the EGR wiring, secondary butterfly wiring, etc.etc.</TD></TR></TABLE>




<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">As far as the convesion harness goes, you won't need one anyways. Your ECU plugs in your car are already OBD1, so all you need to do is find an OBD1 H23A ECU and plug it in. This way you won't have to wire up OBD2 bullshit such as crank fluctuation sensor, secondary o2 sensor, etc.

Check out the stickied H22A swap topic in hybrid - it'll tell you all sorts of good **** that will aplly to the H23A swap.</TD></TR></TABLE>

Tom is the man


What trim is your civic?

RotiEatter

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbogixxer &raquo;</TD></TR><TR><TD CLASS="quote">
Tom is the man
</TD></TR></TABLE>

Fo Sho'

3.point.2

thanks for the info. unfortunately since i dont have too much, or any really, experience working with the ECU i really dont understand what you guys are saying, hehe. so im just going to the shop where im getting the swap done so they can tell me exactly what i need and what i have to do.

Turbogixxer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RotiEatter &raquo;</TD></TR><TR><TD CLASS="quote">Fo Sho' </TD></TR></TABLE>

leg humper

Turbogixxer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by accordinitup &raquo;</TD></TR><TR><TD CLASS="quote">thanks for the info. unfortunately since i dont have too much, or any really, experience working with the ECU i really dont understand what you guys are saying, hehe. so im just going to the shop where im getting the swap done so they can tell me exactly what i need and what i have to do.</TD></TR></TABLE>

it is not hard at all. You just have to run wires to it.

What you do not understand? I maybe able to help you.

https://honda-tech.com/zerothread?id=650329

hondax

IM DOING A B18B1 CONV. TO MY 92 HATCH I CANT REALLY AFFORD A OBD2 TO OBD1 CONVERSION HARNESS.I PINED OUT MY CIVIC HARNESS TO THE B18B1 ECU.CAR STARTED,BUT THE ALTERNATOR HAD SEIZED.IT THREW SOME SMOKE/BUT IT TURNED OVER FINE.EXCEPT FOR THE LOUD SCREECHING NOISE FROM THE ALT.KNOW IT DOESN'T HAVE NO SPARK AND IT WONT START.SHOULD I BUY THE OBD1 TO OBD2 CONV.-HARNESS AND IF SO WARE CAN I GET ONE AT A GOOD $$.OR COULD YO GUIDE ME TO SUCCESS WITH MY EFFORT'S ON TRYNG TO DO IT WITH HONDA WEIRING.I ALREADY HAVE .SO I COULD DO IT AT A BU CHET?????PLEASE HELP THIS IS COMING BETWEEN ME AND MY WIFE SHE SAYS I SHOULD HAVE MARIED MY CAR?????PLEASE HELP